* stabsread.c (define_symbol): Only combine a p/r pair into a
LOC_REGPARM if REG_STRUCT_HAS_ADDR.
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@ -1,3 +1,8 @@
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Sat Dec 25 13:39:21 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
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* stabsread.c (define_symbol): Only combine a p/r pair into a
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LOC_REGPARM if REG_STRUCT_HAS_ADDR.
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Sat Dec 25 09:50:29 1993 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
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* valops.c (value_struct_elt): Check for (value)-1 return from
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@ -450,6 +450,10 @@ read_type_number (pp, typenums)
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static char *type_synonym_name;
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#if !defined (REG_STRUCT_HAS_ADDR)
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#define REG_STRUCT_HAS_ADDR(gcc_p) 0
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#endif
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/* ARGSUSED */
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struct symbol *
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define_symbol (valu, string, desc, type, objfile)
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@ -925,16 +929,27 @@ define_symbol (valu, string, desc, type, objfile)
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SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
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}
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SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
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if (within_function)
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if (within_function
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&& REG_STRUCT_HAS_ADDR (processing_gcc_compilation)
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&& (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
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|| TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION))
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{
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/* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
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name to represent an argument passed in a register.
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GCC uses 'P' for the same case. So if we find such a symbol pair
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we combine it into one 'P' symbol.
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But we only do this in the REG_STRUCT_HAS_ADDR case, so that
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we can still get information about what is going on with the
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stack (VAX for computing args_printed, possible future changes
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to use stack slots instead of saved registers in backtraces,
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etc.).
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Note that this code illegally combines
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main(argc) int argc; { register int argc = 1; }
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main(argc) struct foo argc; { register struct foo argc; }
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but this case is considered pathological and causes a warning
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from a decent compiler. */
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if (local_symbols
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&& local_symbols->nsyms > 0)
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{
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@ -1123,13 +1138,9 @@ define_symbol (valu, string, desc, type, objfile)
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If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
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to LOC_REGPARM_ADDR for structures and unions. */
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#if !defined (REG_STRUCT_HAS_ADDR)
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#define REG_STRUCT_HAS_ADDR(gcc_p) 0
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#endif
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if (SYMBOL_CLASS (sym) == LOC_REGPARM
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&& REG_STRUCT_HAS_ADDR (processing_gcc_compilation)
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&& ( (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
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&& ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
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|| (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)))
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SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
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